Coal-pick sharpener.



E. J. DAVIES.

GOAL PICK SHARPENBB.

, 13. 1,107,912. Patented Aug. 18, 1914.

2 SHEETS-SHEET 1.

E. J. DAVIES.

GOAL PICK SHARPBNER.-

APPLIOATION FILED DEO.13. 1913.

1,107,912. I Patented Aug. 18, 1914,

2 SHEETSBHEET 2.

onrrnn STATES PATENT oFFIoE...

'n PnnAr /r J. Davies, on nrnwn'rnn, p'rnn.

To all whom it mayc n0em Be it known that I, EPHRAIM J. DAVIES, a

citizen-of the United :States, residing at- Hiawatha, in the county ofCarbon and] State of Utah, have invented newand useful Improvements inGoal-Pick Sharpeners, of which-the following is a specification.

,7 This invention is an improved coal pick' sharpener or tipper, theobject of the invention being to-provide'an lmproved machine of thischaracter bymeans of which a pick after having been heated and :forgedto a I point may have the point tipped while the pickis still hot, sothatithe pick may be then tempered and put in oondition for finishing sothat all the work required in the making of the pick may be done in oneheat. Y. Theiinvention COIlSlStSllitllQ construction, combination andarrangement of devices hereinafter described and claimed.

In the accompanying drawings :F igure 1 is a perspective view of apick-tipping machine constructed in accordance with my invention,showing the same arranged for use on an anvil. Fig. 2 is a verticallongitudinal sectional view of the same. Fig. 3 isa. vertical transversesectional view of the.

same. Fig.4 is a horizontal sectional. View of the same on the planeindicated by the line aa,of Fig. 2.

In the construction of my improved pick tipping machine I provide asaddle-shaped base 1 which is adapted to be placed on an anvil such asrepresented at A, the base of the saddle comprising a plate 2 to bear onthe anvil, a depending jaw 3 at one end of 'the plate for engagementwith one side of the anvil and a jaw 4 at the opposite end of the platefor arrangement at the opposite sides of the anvil, said aw i beingprovided with a clamping screw 5 for engagingthe anvil and clamping themachine firmly thereto.

A vertical arm 5 rises from the base plate 2 at'the same end thereofwith the jaw 3 and this arm has an opening 6 in its center, at a pointjust above the base. Said arm 5 has angle arms 7 at its lower end, onopposite sides of the opening 6. Said arms 7 form guides and bear on thebase plate 2 and are secured thereto by means of bolts 8. A choppingblock 9 is arranged between the guide arms 7 with its inner end in thelower portion of theopening 6, the said chopping block beinglongitudinally adjustable, and being for this purpose provided with alongitudinal slot 10 in which is a set screw 11,

connfrrck snAnrnnnn.

Specification of Letters Batent;

which set screwwengages athreaded opening with :whic-hthe base ,plate12is provided. On the rear sideofti'zhe arm 5 isa vertically arrangedguide casing 12 which is secured to the ,said arm 5 *by bolts 13 andpisalso secured to the jaw 3;by screws 14. This guide casing is open at itsupper and-l0werends and serves ito hold and guide a vertically movableblock 15 on the front side of which is a knife plate 16, said knifeplate being provided at its lower end'with a beveled cutting edge 17.The knife plate is secured to the block -15bymeansof screws 18 and hencemay be detached from the block 'to enable the ;kni;fe Eplate ;to thelresharpened or re-. newed. {El e gknife block has a head 19 at itsupper end. The jaw 3 has a substantially L-shaped, adjustingandsupporting screw 20. secured;tl1ereto,,the said screw eXtending up,

into the lowerportion voftheuguide casing 12 ;.and being provided withan adjustable nut, 21. A cushioning spring 22 is arranged on thesaid-screw ,and bears on. the nut, the upper end oft-he spring normallyextending above the upper end of the screw and normally raisingthe block15 so .that the knife is held above the chopping block 9f In theoperation of my improved tipping machine, after a coal mining pick hasbeen heated and forged to a point, the point is placed on the choppingblock 9 and in the opening 6 and pressed rearwardly against the frontside of the knife block and the head of the knife block is then struckby a .P n ed ug- 18,1 4- Application filed r ee t r a'ieis. 'seriaino.806,555.

hammer, thereby causing the knife and the finishing so that all the workon the pick is done during one heat.

On the upper end of the arm 5 is a buffer plate 23 which has a flange 24that bears against the front side of the said arm and is secured bycertain of the bolts which also secure the guide casing 12. This bufferplate receives the blow of the hammer after it has been delivered on thehead of the knife block.

Heretofore in the manufacture of coal mining picks and other likeimplements it has been the practice to tip the same on an emery wheelafter the pick point has been forged and the pick set aside and cooled,and hence after the picks have been tipped by the use of an emery wheelit has been necessary to reheat them for tempering. By the use of myimproved machine picks may be enabling all the work to be done in oneheat.

Having thus described my invention, I claim l. A pick tipping machinecomprising a base having an arm provided with an opening, a choppingblock for insertion in the lower portion of the opening and to bear onthe base, a guide casing on the rear side of the said arm, a knife blockmovable vertically in said guide casing, a tipping knife on said blockand movable vertically across the rear side of said opening and acushioning spring for said knife block.

2. A pick tipping machine comprising a base having an arm provided withan opening, a chopping block for insertion-in the lower portion of theopening and to bear on the base, a guide casing on the rear side of thesaid arm, a knife block movable vertically in said guide casing, atipping knife on said block and movable vertically across the rear sideof said opening and a cushioning spring for said knife block, and meansto adjust said cushioning spring.

8. A pick tipping machine comprising a base having an arm provided withan opening, a chopping block for insertion in the lower portion of theopening and to bear on the base, a guide casing on the rear side of thesaid arm, a knife block movable vertically in said guide casing, atipping knife on said block and movable vertically across the rear sideof said opening and a cushioning spring for said knife block, the saidarm of the base being provided at its center with a buffer plate.

4. The herein described pick point tipping machine comprising a saddlebase to be fitted on an anvil and having means for securing the saddleto an anvil, an arm rising from said saddle base and having an openingin its lower portion and also provided with guide arms secured on theupper surface of the saddle base and arranged on opposite sides of saidopening, a chopping block on said saddle base, between the said arms andwith its inner end in the lower portion of said opening, a verticallyarranged guide element on the rear side ofsaid arm, a knife block insaid guide element and having a knife blade to move across the rear sideof the said opening and down to said chopping block, and a cushioningspring for said knife block.

In testimony whereof I aflix my signature in presence of two witnesses.

EPHRAIM J. DAVIES.

W'itnesses C. J. Pownns, E. O. BOWEN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G. l

